Chiral critical exponents of the triangular-lattice antiferromagnet CsMnBr3 as determined by polarized neutron scattering

被引：54

作者：

Plakhty, VP ^{[1
]}

Kulda, J

Visser, D

Moskvin, EV

Wosnitza, J

机构：

[1] RAS, Petersburg Nucl Phys Inst, Gatchina 188350, St Petersburg, Russia

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[3] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[4] Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany

[5] Rutherford Appleton Lab, ISIS Facil, CLRC, Didcot OX11 0QX, Oxon, England

[6] Delft Univ Technol, IRU, NL-2629 JB Delft, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.85.3942

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The critical exponents gamma (c) = 0.84(7) of the chiral susceptibility above the Neel temperature, T-N, and beta (c) = 0.44(2) of the average chirality below T-N have been determined for the triangular-lattice antiferromagnet CsMnBr3 by means of polarized neutron scattering. These first experimental values of chiral critical exponents are in line with theoretical predictions and fulfill their scaling relation. The temperature at which the average chirality appears coincides with the spin-order transition temperature, T-N.

引用

页码：3942 / 3945

页数：4

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